Hose-clamp tool



G. A.'DE GRAFF.

HOSE CLAMP TOOL.

APPLICATION FILED JULY 12. 19:9.

Patented Feb. 10,1920.

l' ll l mm H I MT EAT? GEORGE A. Dr. smart, or MILVTAUKEE, VJISCONSIN, ASSIGNOR or ONE-HALF Ere:

' HENRY J. sivirrrr, or CHICAGO, ILLINOIS. I v

HOSE-CLAMP Toot. r

Hose-Clamp Tools, of which the following i is a full, clear, and exact description.

Among the principal ob ects which the present invention has 1n v1ew are: to provide means for rapidly applying a wire cinch or clamp on hose for attaching same to nozzles or coupling fittings; to provide means for tightening the cinch or clamp; and to simplify the method of applying the cinch to the hose.

Drawings. Figure 1 is a longitudinal section of a tool constructed and arranged in accordance.

Fig. 5 1s a side view of the same showing 'hy broken lines the disposition of the hose with relation to the tool.

7 Description.

The character of hose forwhich the present invention is more particularly adapted isv that known as pneumatic hose; The pneumatic hose which is used for operating pneumatic tools or for delivering air under pressure experience ditliculty, in that the int'ernal pressure tends to open the ends of the hose where they are joined to splicing couples or to the nozzles or tools which are being supplied by them. Clamps of various character have been devised and employed. An unsatisfactory feature in such employment has existed, in that it has been found difiicult to obtain the closed and most complete adjustment which is sometimes essential.

Most operators prefer the old style of winding the hose with wire or other pliable strand which can be drawn on the hose without any reference to predetermined operating positions or relations. The dilficulty which has arisen in the use of the wire has been the inability to obtain the necessary specification ofLetters Patent. Patented Feb, 10,1926,

Application filed 1111 7 2, 1919. Serial No. 310,472.

strainon the wire to bed it in the hose and to constrict the hose sutliciently to hold it on the coupling against the excess internal pressure of the-air or other fluid.

As seen in the drawings, two looping heads 10 and 11 are provided, each furnished with deep seated cross slots 12. The slots 12 as shown in Figs. 4: and 5 ofthe drawings are provided for threading the cinch wire 13; By passing the wire through the trans verse slot and then returning it thoughthe longitudinal slot of each of the heads, a perfect snubbing grip is provided on the two heads. 7

As shown best in Fig. 4 of the drawings the attachment of the free end of the winding attachment is first made on the head 11:. The hose 14 is then disposed in position between the extended heads 10 and 11, and the wire 13 is wrapped circularly or spirally about the hose and drawn normally tight and passed through the slots 12 in the head 10, forming the snu'bbing hitch above described and that shown in the drawings.-

7 The hitches thus made in the heads 10 and 11 prevent the slippage of the wire, when the two heads are forced apart to produce the necessary strain or pull on the wire 13- and the loop 15 formed thereby, x As seen best in Fig. lof the drawings, the head .11 is laterally extended from a flattenedscrew-threaded shank 16. The segmental threads on the shank 16 are. pitched so as to produce relatively large movement of-the shank when the nut formed by the split segments 17 is rotated.

The split segments 17 each have a complete half section of the thread that corresponds with the thread on the shank 16.

The segments 17 are held rigidly in working relation by a screw-threaded sleeve 18 to accommodate the fine thread of which the outer surface of the joined segments 17 is threaded. When the sleeve 18 is in working position relative to the segments 17, the

EN F

nut and the threads of the shank 16 are advanced or retracted therethrough. V

The head 11 is held on a sliding member 9.. The sliding member 9 is cylindrical in form and has a groove 20 therein to receive the flanges 21 formed on the segments 17.'

The segments 17 have grooves 22 to receive p p the flange 23 formed at the end of the sliding member 9. V

After forming the loop 15 about the pipe 14, and after having secured the wire to the headslO and 11 by the hitches therein 'de scribed, if the operator turnsthe handlenut having the segments 17 the-heads 10 and 11 are supported or drawn together, as the case may be. The usual operation is to support the two heads to exert a pulling strain on the wire 13 upon the loop 15 formed thereby.

The screw jack principle employed enables the operator to exert great strain on the wire 13, sufficient torbed the same into the body of the hose, and to draw the hosein separably upon the coupling or tool fixture. When the strain has been thus imposed, the tool is swung a half or complete circle, with the result that a twist such as indicated by the numeral 24 in Fig. 4 of the drawings if formed, which ties the ends of the loop 15 to prevent any subsequent opening of the said loop 15. In this position, the wire l3 may be' severed either inside or outside of the heads 10 and 11, and the Winding twist 24 may be clipped or further perfected.

The tool isthen ready for a further opera-' tion.

It is obvious that bymoving the sliding member 9 to and fro on the shank 16, the heads 10 andll may be gapped in adjustment for any size of pipe preliminary to forming the binding loop or cinch."

Claims.

1. A tool as characterized comprising a plurality of slidably connected rigid 'members, said members having'mutu'ally alined engagingdevices for fixedly'holding a pliable Wrapp ng member; power multiplying means operatively engaging sa d rigid members to separate the same for imparting a pulling strain on said wrapping member,

7 said means embodying a nut formed of a plurality of segments having aseries of. corresponding thread sections formed thereon for engagement with a threaded shank of theopposite rigid member; and a cylindrical collar thread-engaged with the exterior of said segments for retracting the. combined sections in the for m of a nut.

2. A tool as characterized comprising a plurality of slidably connected rigid members, each of said members being provided with laterally extended slots formed in the ends thereof for holding a pliable wrapping inembe'r, one of said rigid members having thread sections formed at the edges thereof, said member being oblong in cross section, and a nut thread-engagedwith said shank, said nut consisting of a-plural'ity of seg ments forming a split nut, the threads whereof aline and correspond with the threads on said-shank; and a sleeve threaded to engage threads on-the exterior of said thereof for holding a pliable member; a

slidablc member having a laterally extended head, said'head corresponding to the head on the first mentioned member for cooperatin'g therewith to hold a section of said wrapping member, said second member having a groove at the extremity thereof; a split nut having adjacent members 'for said groove in said second mentioned member,

. said split nuthavinginterior grooves for fitting the'groo've sections of said shank, the

exterior of said nut being provided-Withfine threads; and a cylindrical collar engaging said nut and the threads on-the outer side thereof-for retracting the second mentioned rigid member.

GEORGE A. DEV GRAFF. 

